Artigo:

Hemicellulose, a large available carbohydrate present in sugarcane bagasse, can offer great potential to be used as carbon source on Biotechnology process. However, specific yeasts to convert pentose sugars and operation system are key factors for the hemicellulose hydrolysate converting into bioproducts. This investigation presents the feasibility of sugars consumption from hemicellulosic sugarcane bagasse hydrolysate (HSBH) by two important pentose converting yeasts (S. stipitis NRRL Y-7124 and S. shehatae UFMG-HM 52.2) immobilized in calcium alginate matrix in different conditions. Results showed 99,64 % and 98,66% of sugars consumption in 48h by S. stipitis NRRL Y-7124, when experiments were conducted with 1% and 2% of sodium alginate in the immobilization step. The same experiments using the yeast S. shehatae UFMG-HM 52.2 achieved 99,2% and 98,3% in 72h, respectively. Assays showed the potential of these immobilized yeast by this technical for sugars consumption from